Nonlinear Metafiber: On-fiber 3D Nanoprinted Metalenses to Enhance Ultrafast Supercontinuum Generation in Suspended Core Fibers

IF 6.5 1区 物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Shahrzad Hosseinabadi, Johannes Hofmann, Torsten Wieduwilt, Xue Qi, Michael H. Frosz, Markus A. Schmidt
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Abstract

Supercontinuum generation (SCG) using ultrashort pulses is a highly efficient technique for achieving broad nonlinear frequency conversion, with suspended core fibers (SCFs) being particularly effective due to their high modal field concentration and precise dispersion control. However, their small core sizes, typically a few micrometers, pose significant challenges for light incoupling, resulting in a low and unstable coupling that often requires complex high numerical aperture bulk optics that are both costly and difficult to integrate. This work addresses this key challenge by introducing the concept of nonlinear metafibers. By implementing tailored metalenses directly on the end faces of SCFs using advanced 3D nanoprinting, we demonstrate alignment-free and highly robust coupling of broadband ultrashort pulses into small-core SCFs. This first demonstration of a nonlinear metafiber achieves full all-fiber integration, eliminating the need for bulky external optical components and facilitating broadband soliton-based SCG. The flexibility of this novel approach, which effectively overcomes a fundamental problem in nonlinear photonics, has broad applicability in various fields including quantum technology and life sciences. In addition, the concept extends beyond SCFs to other fiber types and on-chip waveguides, paving the way for new opportunities in nonlinear photonics and integrated optics. This study establishes nonlinear metafibers as a transformative platform with the potential to advance applications in which efficient, compact, and robust nonlinear photonic systems are critical.

Abstract Image

非线性超纤维:纤维上3D纳米打印的超透镜增强悬浮芯纤维的超连续统生成
使用超短脉冲的超连续谱产生(SCG)是实现宽非线性频率转换的高效技术,悬浮芯光纤(scf)由于其高模态场浓度和精确的色散控制而特别有效。然而,它们的核心尺寸很小,通常只有几微米,这对光耦合构成了重大挑战,导致低耦合和不稳定耦合,通常需要复杂的高数值孔径体光学元件,既昂贵又难以集成。这项工作通过引入非线性元纤维的概念来解决这一关键挑战。通过使用先进的3D纳米打印技术直接在scf的端面上实现定制的超透镜,我们展示了宽带超短脉冲与小核scf的无对准和高度鲁棒耦合。这是非线性超光纤的首次演示,实现了全光纤集成,消除了对笨重的外部光学元件的需求,并促进了基于宽带孤子的SCG。这种新方法的灵活性有效地克服了非线性光子学中的一个基本问题,在包括量子技术和生命科学在内的各个领域具有广泛的适用性。此外,该概念从scf扩展到其他光纤类型和片上波导,为非线性光子学和集成光学的新机遇铺平了道路。这项研究建立了非线性超光纤作为一个具有推进应用潜力的变革平台,在这些应用中,高效、紧凑和鲁棒的非线性光子系统至关重要。
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来源期刊
ACS Photonics
ACS Photonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
11.90
自引率
5.70%
发文量
438
审稿时长
2.3 months
期刊介绍: Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.
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